condition mean min max ZT0-3 0.96886275 0.9507025 0.987023 ZT4-7 1.9991700000000001 1.9991700000000001 1.9991700000000001 ZT8-11 1.14627 1.14627 1.14627 ZT12-15 0 0 0 ZT16-19 1.199153 1.199153 1.199153 ZT20-23 1.24271 1.24271 1.24271